Korean J Helicobacter Up Gastrointest Res.  2022 Mar;22(1):70-74. 10.7704/kjhugr.2021.0061.

The Basic Concept of Claim Data-based Research

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  • 1Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
  • 2Kyung Hee University College of Medicine, Seoul, Korea

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